The rapid determination of volatile fatty acid number in para rubber latex using fourier transform-near infrared spectroscopy based on quantification and discrimination model
作者机构：Department of Food Engineering Faculty of Engineering at Kamphaengsaen Kasetsart UniversityNakhonpathomThailand Thai Rubber Latex Corporation(Thailand)Public Company LimitedChonburiThailand
出 版 物：《Journal of Innovative Optical Health Sciences》 (创新光学健康科学杂志（英文）)
年 卷 期：2015年第8卷第5期
页 面：107-115页
核心收录：
学科分类：0831[工学-生物医学工程（可授工学、理学、医学学位）] 083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 1004[医学-公共卫生与预防医学(可授医学、理学学位)] 0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0836[工学-生物工程] 0702[理学-物理学]
基 金：Thai Rubber Latex Corporation Thailand
主 题：Hevea brasiliensis latex quality polyisoprene ISO 12099:2010(E)
摘 要：Volatile Fatty Acid number(VFA no.)is one of the parameters indicating the state of quality of Para rubber latex at that particular *** factories analyze this parameter using standard analytical method as in ISO 506:1992(E).Nevertheless,this procedure is complicated,chemical and time consuming,as well as skilled analyst ***,near infrared(NIR)spectroscopy which is rapid,accurate and nonchemicals method was applied to determine the VFA *** latex and concentrated latex based on quantification and discriminant *** best calibration equation was obtained from standard normal variate(SNV)spectra in the region of 6109.7–5770.3,4613.1–4242.9 cm^(-1) with R?0:832,SECV?0:036 and no *** the performance check,statistically it was found that SECV and bias were low enough for practical acceptance and the predicted VFA *** not di®erent significantly from actual VFA *** 95% confidence *** addition,discriminant model was developed to separate good quality latex from the deteriorated latex using VFA *** 0.06 as standard as in ISO 2004:2010(E).The discriminant model can be used to screen the latex with overall accuracy of 91.86%in validation set.
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